add test case
diff --git a/xmltest.cpp b/xmltest.cpp
index 77cd6d7..4937dcb 100755
--- a/xmltest.cpp
+++ b/xmltest.cpp
@@ -632,6 +632,10 @@
 		ele->SetAttribute( "int", 1 );

 		ele->SetAttribute( "double", -1.0 );

 

+		const char* answer = 0;

+		ele->QueryAttribute("str", &answer);

+		XMLTest("Query char attribute", "strValue", answer);

+

 		const char* cStr = ele->Attribute( "str" );

 		{

 			XMLError queryResult = ele->QueryIntAttribute( "int", &iVal );